Cited by 300Chronic Obstructive Pulmonary Disease (COPD) ResearchCardiovascular and exercise physiologyRespiratory Support and Mechanisms

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Role of inspiratory capacity on exercise tolerance in COPD patients with and without tidal expiratory flow limitation at rest

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Diaz, O., Villafranca, C., Ghezzo, H, Borzone, G, Leiva, A, Milic-Emil, J, Lisboa, C·2000·European Respiratory Journal

Abstract

Expiratory flow limitation promotes dynamic hyperinflation during exercise in chronic obstructive pulmonary disease (COPD) patients with a consequent reduction in inspiratory capacity (IC), limiting their exercise tolerance. Therefore, the exercise capacity of patients with tidal expiratory flow limitation (FL) at rest should depend on the magnitude of IC. The presented study was designed to evaluate the role of FL on the relationship between resting IC, other respiratory function variables and exercise performance in COPD patients. Fifty-two patients were included in the study. Negative expiratory pressure (NEP) uptake (VO2,max) were measured during an incremental symptom-limited cycle exercise. Twenty-nine patients were FL at rest. The IC was normal in all non-FL patients, while in most FL subjects it was decreased. Both WRmax and VO2,max were lower in FL patients (p<0.001, each). A close relationship of WRmax and O2,max to IC was found (r=0.73 and 0.75, respectively; p<0.0001, each). In the whole group, stepwise regression analysis selected IC and forced expiratory volume in one second (FEV1)/forced vital capacity (FVC) (% predicted) as the only significant contributors to exercise tolerance. Subgroup analysis showed that IC was the sole predictor in FL patients, and FEV1/FVC in non-FL patients. Detection of flow limitation provides useful information on the factors that influence exercise capacity in chronic obstructive pulmonary disease patients. Accordingly, in patients with flow limitation, inspiratory capacity appears as the best predictor of exercise tolerance, reflecting the presence of dynamic hyperinflation.

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Crossref · 10.1034/j.1399-3003.2000.16b14.x

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Research works printed but not linked: 5

  1. Carlson DJ, Ries AL, Kaplan RM. Predicting maximal exercise tolerance in patients with COPD. Chest 1991; 100: 307±311.
  2. Eltayara L, Becklake MR, Volta CA, Milic-Emili J. Rel- ationship between chronic dyspnoea and expiratory flow- limitation in patients with chronic obstructive-pulmonary disease. Am J Respir Crit Care Med 1996; 154: 1726± 1734.
  3. Borg GAV. Psychophysical basis of perceived exertion. Med Sci Sports Exerc 1982; 14: 377±381.
  4. Hertle FH, Goerg R, Lange HJ. Arterial blood partial pres- sure as related to age and anthropometric data. Respiration 1971; 28: 1±30.
  5. Gottfried SB. The role of PEEPi in the mechanically ventilated patient. In: Roussos C, Manni JJ, eds. Ven- tilatory Failure. Berlin, Springer-Verlag, 1991; pp. 392± 418.

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Metadata

Authors
Diaz, O., Villafranca, C., Ghezzo, H., Borzone, G., Leiva, A., Milic-Emil, J., & Lisboa, C.
Affiliations
  • Pontificia Universidad Católica de Chile (CL)
  • McGill University (CA)
Venue
European Respiratory Journal
Published
2000-08
Volume
16
Issue
2
Pages
269
ISSN
  • 0903-1936 (ISSN-L)
  • 1399-3003
OpenAlex
W2127159607
Cited by
300
References
27
Citations by year
2025: 3 · 2024: 3 · 2023: 7 · 2022: 6 · 2021: 8 · 2020: 6 · 2019: 11 · 2018: 8 · 2017: 11 · 2016: 6 · 2015: 13 · 2014: 10 · 2013: 12 · 2012: 19
FWCI
7.78
Type
journal article
Language
en
Open access
Locations
  • European Respiratory Journal (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Chronic Obstructive Pulmonary Disease (COPD) Research
  • Health Sciences › Medicine › Physiology (medical) › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Respiratory Support and Mechanisms
Keywords
chronic obstructive pulmonary disease, inspiratory capacity, exercise tolerance, dynamic hyperinflation, negative expiratory pressure, VO2max, FEV1, FEV1/FVC ratio
MeSH terms
Aged, Female, Forced Expiratory Volume, Forecasting, Humans, Inspiratory Capacity, Lung Diseases, Obstructive, Male, Oxygen Consumption, Physical Endurance, Pulmonary Ventilation, Rest, Tidal Volume, Vital Capacity, Exercise

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